You are looking for a bison container near the Green Trail 1 trailhead. Parking and Trailhead info is listed on MN 2.
Pearly Gates, by the group Iron Butterfly, was released in 1975. You won’t find any butterflies here this time of year, nor ‘pearly’ gates. Hopefully, you will find a cache.
This cache is part of the 2020 Winter Geocaching Series at Margaret Lewis Norrie State Park. There are 12 snow-friendly caches at this park. Numbers 1-11 are on a loop; number 12 is near the Environmental Center. Other Taconic Region parks participating this year are FDRoosevelt State Park and Rockefeller State Park Preserve. These caches will be available from January 1 until mid-April 2020.